Mac-address table in IOS Routers
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07-22-2014 12:24 PM - edited 03-04-2019 11:24 PM
Hi All, Probably my ask may sound insane, but I am much curious to get answered.
Will Router maintain a CAM Table for its connected Layer3(routed) interfaces and Layer 3 sub-interfaces? I am seeing the MAC address is empty in my router, though "show ip arp" table is filled with MAC & IP address.
Why MAC address table is empty?.
Thanks / SAIRAM
rtr1-arabon#sho ip int bri
Interface IP-Address OK? Method Status Protocol
Serial0/3/0 unassigned YES NVRAM up up
Serial0/3/0.777 10.134.214.1 YES NVRAM up up
Port-channel1.2 10.134.215.1 YES NVRAM up up
Port-channel1.10 10.134.216.2 YES NVRAM up up
rtr1-arabon#show mac-address-table
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07-22-2014 03:34 PM
Hello,
MAC are only present on Ethernet interfaces.
